Impossible happened
ghc-6.7.20070702: panic! (the 'impossible' happened)
(GHC version 6.7.20070702 for i386-unknown-linux):
nameModule $dMonad{v a1BV5}
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
Unfortunately, I have no test case, but it happened during the evaluation of something of type IO ([(Int, Int)]) which uses undecidable instances, functional dependencies and the no monomorphism restriction.
Trac metadata
Trac field | Value |
---|---|
Version | 6.7 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | highest |
Resolution | Unresolved |
Component | Compiler |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | Unknown |
Architecture | Unknown |